Just to prove that a seeding unit does not need to be only one color (manufacturer), we'll get a look at a John Deere 9400T tractor pulling a Concord air/hoe drill unit that is being fed from a Bourgault 4300 Commodity cart. Add to that the NH3 anhydrous ammonia tank for nitrogen, and you end up with a pretty long "train". Then throw in the harrows at the end to loosen up the tracks and it gets even longer.
Spring planting in Manitoba takes on many forms and equipment miztures - but it gets the job done.
Enjoy!